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L. GREBESSAG. PETROLEUM, GAS, 0 OIL ENGINE.

No. 530,161. Patented e0. 4,18 4-.

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L. CREBESSAU.

PETROLEUM, GAS, 0R 01 ENGINE.

N0.'530,161. Patented Dem 4, 1894.

O O N E N R o: \I o b o o 0 O x W; nesSQS Invcnto'r THE 'uonms PETERS 0a.. wnmauTHQ. WASHINGTON, n c.

* .N-iTEDl ST AT-ES PATENT 'rrron.

LEoNoE oREBEssAo, or PARIS, FRANCE, ASSIGNOR TO THE SOCIETE FRANQAISE nus MOTEURS oRnBEssAo, or SAME PLACE.

PETROLEUM, GAS, ORHOIL ENGINE.

SPECIFICATION forming part of Letters Patent No. 530,161., dated December 4, 1894. Application filed August 24, 1893. Serial lilo. 483,9AO. (No model.) Patented in France April 6, 1893, No. 229,185.

motor is the special carburetor for chargingthe air in the interior with petroleum vapor.

In orderto explain the nature of the invention more clearly I have by way of an exampleshown in the accompanying drawings a motor according to thisimproved system.

In the said drawings Figure 1 is a side elevation of the motor partly in section. Fig. 2 is a plan of the same but with the carburetor removed. Fig.- 3 is an end elevation showing the crank shaft and fly-wheeL. Fig. 4 is a section of the cylinder cover with the admis sion chamber and valve on the line x as Fig. 2 showing the ignitcr. Fig. 5 is a section of the same on the line 1 y Fig. 2 showing the inlet tube of the explosive mixture. Fig. 6 shows the mechanism for operating the admission and exhaust valves by a single cam. Fig. 7' shows a view of the back end of the cylinder. Fig. 8 shows the same in plan and partly in section on the line. a 2:. Fig. 1.

The motor is of the four cycle type, comprising, first, aspiration of the explosive mixture; second, compression of the same; third, ignition of the explosive mixture giving the impulse to the piston on its outward stroke; fourth, exhaust.

The improved motor differs from motors hitherto in use in the arrangement of distributing the gas and effecting the exhaust by means of a single cam; further in the special arrangement of the exhaust and the admission valves for the explosive mixture and finally in the inlet cock for the gas which cock serves at the same time for distributing the gas. The explosion is effected by means of electricity through a Ruhmkorff coil in connection with an insulated igniter of china, fed

from a battery consisting of two elements.

Fig. 1 shows the motor provided with the improved carburetor and mounted on a suitable stand.

When petroleum gas is used for driving the engine itis only required to make a plain joint at the union 0 and to open the cock D and vice versa for coal gas. A is the receiving chamber of the gas which after the cock D has been opened passes through the valve M, which is operated by the rod V, into the tube A. The rod V receives the necessary movement through a lever B R operated by the cam T.

The aspiration of the gas is effected by the motor pistonthe gas coming from A'and the air from B passing together through the admission valve M for the mixture into the interior of the motor cylinder which latter is extended for a length equal to one-third of the piston stroke so as to form the compression chamber. When the piston arrives at the end of the out-stroke the valve closes un der the pressure of a spring so that at the second back stroke of the piston the mixture becomes compressed. At the third out-stroke the mixture is fired through the medium of a cam Qwhich makes contact at that moment with a commutator provided with sectors and adapted to regulate the current which is established at the third in-stroke during onesixth of therevolution of the driving shaft.

N is the port for the exhaust gases coming from the valve N which latter is connected to the head piece P operated by the same cam T which operates the admission valve of the gas.

0 is the outlet of the exhaust and S the governor of the engine driven by a miter wheel keyed on the shaft Q which drives the cam for regulating the admission and exhaust as well as the cam for operating the firing of the explosive mixture.

The shaft Q revolves in the proportion of one to two-11c. it makes exactly half the nu mber of revolutions of the main shaft Z.

The lever S of the governor is adapted to move down when the speed of the engine becomes greater than the calculated speed so that the admission of the gas becomes diminished.

K is the support of the governor and also receives the cam shaft Q of which latter K forms the second bearing so that the cam T' is situated between the two supports K K. The other moving parts of the engine comprise a cranked shaft Z, connecting rod Z, a hollow piston moving in the cylinder and a fly-wheel Z".

J is a pipe leading from the exhaust chamber underneath the carburetor G for the purpose of keeping the temperature of the latter up to between 20 to 25 centigrade.

The amount of gas from the exhaust to pass through the pipe J can be regulated at will and leaves again through the pipe L. An inspection orifice I enables the falling drops of the liquid to be seen through the glass in order that they may be regulated by means of a tap F leading from the reservoir E while the said orifice enables at the same time the level of the liquid contained in the carburetor to be seen. The temperature in the latter may be read ofi from a thermometer H. The said carburetor is supported by a bracket L, while the engine is supported on a bed 0 mounted on aframe X. The latter also supports the coil X.

Fig. 4 shows the igniter Y in connection with a sectional view of the cylinder cover, the admission chamber and valve for the explosive mixture and the air inlet B. The air for the mixture passes up through the valve M which for that purpose is shown lifted up-and gets finally into the cylinder through the portN.

Fig. 5 shows the cover of the engine cylinder with a sectional view of the admission chamber and valve for the explosive mixture together with the gas inlet pipe A, the gas passing through the valve M and through the port N into the cylinder.

Fig. 6 shows the cam for operating both the admission and the exhaust valves. In constructing an angle of one hundred and fifteen degrees on a base line drawn through the center of the shaft Q and the point of contact of the head-piece P with the cam the second line of the angle will give the pointof' contact of the lever R with the cam '1.

Fig. 2 is a plan of the motor with the carburetor taken off. In this figure B is the airinlet cock; Y, the igniter; D, the gas inlet; V, the cylinder; V, the connecting rod for operating the gas inlet valve; P, the means for operating the exhaust valve; T, the cam for operating the admission and the exhaust; K K, the bearingsof the shaft Q; U, the commutator; Q, the contact cam for the ignition (firing the explosive mixture); S, thelever of the engine governor; R, the lever for operating the distribution of the gas; S. the engine governor; Z, the crank shaft; Z, the connecting rod of the engine; Z, the fiy-wheel; O, the bed of the engine, and X the stand.

Fig. 3 is an end view of the engine and shows clearly the driving mechanism for the engine governor, the cam T, the lever B, the commutator U, the bearings K K of the shaft Q of the cam Q, the cylinder V, the engine bed 0, the connecting rod Z, the crank shaft Z and the fly-wheel Z.

Fig. 8 isa plan of the engine cylinder partly in section to show the port N and the recess for lodging the exhaust valve.

Fig. 7 shows the front end of the cylinder with the port N in dotted lines.

I claim- In an explosive engine, the combination with the inlet and exhaust valves and the rods connectedthereto, of'the cam, having one rising part, carried by a shaft driven from the engine, cooperating directly with the rod of the exhaust valve, and the pivoted two armed lever one arm of which cooperates with the rod of the inlet valve and the other with the cam, said cam and pivoted lever being so arranged as that when the cam revolves its rising part will act successively on the rod of the exhaust valve and the cooperating arm of the lever, and thereby close the valves; substantially as described.

In testimony whereof I have hereunto set my hand in the presence of the two subscribing witnesses.

LEoNcE CREBESSAC.

Witnesses:

W. NELLIGEN, R. M. HOOPER. 

